| DOI: | 10.1016/j.epsl.2018.04.062
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| Scopus记录号: | 2-s2.0-85047087632
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| 论文题名: | The geophysics, geology and mechanics of slow fault slip |
| 作者: | Bürgmann R.
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| 刊名: | Earth and Planetary Science Letters
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| ISSN: | 0012821X
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| 出版年: | 2018
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| 卷: | 495 | | 起始页码: | 112
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| 结束页码: | 134
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| 语种: | 英语
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| 英文关键词: | afterslip
; fault mechanics
; friction
; rheology
; slow earthquake
; tremor
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| Scopus关键词: | Earthquakes
; Friction
; Rheology
; Structural geology
; afterslip
; Earthquake nucleation
; Fault mechanics
; Fault zone structures
; Spatial and temporal scale
; Spatiotemporal evolution
; Strengthening materials
; tremor
; Fault slips
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| 英文摘要: | Modern geodetic and seismologic observations describe the behavior of fault slip over a vast range of spatial and temporal scales. Slip at sub-seismogenic speeds is evident from top to bottom of lithospheric faults and plays an important role throughout the earthquake cycle. Where earthquakes and tremor accompany slow slip, they help illuminate the spatiotemporal evolution of fault slip. Geophysical subsurface imaging and geologic field studies provide information about suitable environments of slow slip. In particular, exhumed fault and shear zones from various depths reveal the importance of multiple deformation processes and fault-zone structures. Most geologic examples feature frictionally weak and velocity-strengthening materials, well-developed mineral fabrics, and abundant veining indicative of near-lithostatic fluid pressure. To produce transient slow slip events and tremor, in addition to the presence of high-pressure fluids a heterogeneous fault-zone structure, composition, and/or metamorphic assemblage may be needed. Laboratory and computational models suggest that velocity-weakening slip patches smaller than a critical dimension needed for earthquake nucleation will also fail in slow slip events. Changes in fluid pressure or slip rate can cause a fault to transition between stable and unstable fault slip behavior. Future interdisciplinary investigations of slow fault slip, directly integrating geophysical, geological and modeling investigations, will further improve our understanding of the dynamics of slow slip and aid in providing more accurate earthquake hazard characterizations. © 2018 Elsevier B.V. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/109828
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| Appears in Collections: | 影响、适应和脆弱性
气候变化事实与影响
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作者单位: | Department of Earth and Planetary Science, Berkeley Seismology Lab, University of California, Berkeley, CA 94708, United States
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| Recommended Citation: | |
Bürgmann R.. The geophysics, geology and mechanics of slow fault slip[J]. Earth and Planetary Science Letters,2018-01-01,495
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